The repeated problems at Avalon/35th were blamed on transit-signal priority – which was subsequently disabled TFN until it could be worked out.
.http://westseattleblog.com/2012/12/35thavalon-signal-sticks-again-and-its-justin-to-the-rescue
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We will check back with SDOT (likely not before tomorrow unless they have an update later tonight) regarding what they’ve found on this one as well as 42nd/Alaska, which malfunctioned recently too – all three intersections are on the RapidRide line, of note re: transit-signal priority…

Treating it as a fourway stop would be easier if northbound California wasn’t stuck on green. Those drivers have to realize there is a problem before you can negotiate the intersection, from their perspective it looks good to go. scary

Yea we went though there about an hour ago, saw a cop show up and mess with the signal controls, that’s when the north bound signal got stuck on green and everyone else was red. Pretty scary getting though there hoping some hot shot headed north was looking before blazing though. Maybe put somebody on traffic directing before adjusting the signal box next time.